Giant Soldier of Stone

Flip (You may cast this face down and tapped as a
1/1 creature for its casting cost. Turn it face up when
it blocks or when it untaps. Additionally, this
creature may block while tapped. If it blocks in this
way, it assigns combat damage equal to its toughness
rather than its power.)
A giant warrior made of stone. A punch from this
creature has earth-shaking results.